Element of Security and Secure document
2015
A security element for security document, comprising: - a first perforated layer made from a first material, defining at least one raster pattern halftone, - a second layer, semi-transparent, made of a second material different from the first, this second layer being visible through at least one aperture of the first layer.
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
0
Citations
NaN
KQI